Universal Robots offers a wide range UR certified grippers through UR + -Global ecosystem components, software and application kits that have been validated and certified to be mechanically, electrically and digitally compatible with Universal Robots cobots.
The variety of grippers available at first can seem daunting, especially if you’re new to automation. Electric, pneumatic, soft and vacuum handles are available. There are 2- and 3-finger, magnetic, mechanical and adaptive grippers, and each gripper offers unique benefits in the care, material handling and assembly of your machine.
This article tells about parallel grippers, so if you are in the initial stages of a gripper journey and you are wondering what are the types of grippers? try to read This article first. (If you’re looking for an overview of the differences in grippers and want to know how vacuum grapples and pneumatic grippers work, check out This article.)
What is a parallel gripper?
Parallel grippers are a type of gripper for industrial robots with two fingers that remain parallel as they open and close. In use, the fingers close on the workpiece, grip it throughout the task and release the object if necessary. The robotic gripper mechanism found in parallel grippers makes them excellent for handling predictable parts and are often selected for machine maintenance and pick & place type applications. Parallel adhesives are the most popular types of infection in the UR + ecosystem due to their ease of use.
Parallel grippers can be operated electrically or pneumatically. Electric parallel grippers use electricity to power the motors. The motors are connected to the fingers of the gripper so that the circular motion of the motor becomes a linear motion. At the same time, pneumatically operated parallel grippers use air pressure to open and close the gripper fingers.
Parallel grippers are also found in the ‘mechanical gripper’ and the ‘adaptive gripper’. The term “mechanical gripper” refers to any industrial gripper that uses moving levers (or ‘fingers’) to grip objects. Mechanical grippers provide reliable performance in all types of manufacturing applications from machine to assembly, but adaptive grippers are more versatile because they allow the robot to pick up a wide variety of different objects without the end user having to step in and change grippers.
Parallel grippers should not be confused with 3-finger or angled grippers. 3-finger grippers have a more complex mechanism that grips the workpiece with three fingers that have moved 120 °. In use, the fingers push the workpiece into the center of the gripper to grip the object securely. At the same time, angular grippers are so-called because they use fingers that approach the gripper from multiple angles (e.g., 80 ° or 30 °). In some applications, such as when there is no room for the parallel gripper to open and close successfully, angled grippers may be a better choice.
Robotiq’s Hand-E gripper offers a 50 mm parallel stroke, making it ideal for precise assembly. The compact design of the gripper is durable enough to guarantee reliability even in the toughest manufacturing conditions, including CNC machining. Available in both dual and single configurations and specifically designed for use with collaborative robots, the Hand-E also offers adjustable force, rounded edges, self-locking functions and other features that make it safe to use near humans. The Hand-E is truly adaptable, which means it can adapt independently to many different types of products, different sizes and shapes.